20990433

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{1489}}^1$

素因数の和:1656

約数の個数: 16

約数和(自身を含む): 28989440

約数和(自身を除く): 7999007

約数列:

[1, 3, 37, 111, 127, 381, 1489, 4467, 4699, 14097, 55093, 165279, 189103, 567309, 6996811, 20990433]

約数ペア:

[(1, 20990433), (3, 6996811), (37, 567309), (111, 189103), (127, 165279), (381, 55093), (1489, 14097), (4467, 4699)]